Collapsible tube winder



FIG. 1 is a front elevational view of a collapsible tube winder showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof; and

FIG. 4 is a right side elevational view thereof. 

The ornamental design for a collapsible tube winder, as shown and described. 